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M94A3272.TXT
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1994-10-25
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Document 3272
DOCN M94A3272
TI Analysis of HIV-1 nef gene sequences directly isolated from infected
individuals.
DT 9412
AU Kim SH; Kang MR; Lee MH; Huh JE; Shin Y; Kim DG; Kim TG; Cho MH; Kim S;
Seoul National University, Korea.
SO Int Conf AIDS. 1994 Aug 7-12;10(1):114 (abstract no. PA0076). Unique
Identifier : AIDSLINE ICA10/94369303
AB The nef gene is located near the 3' end of the HIV genome and overlaps
the 3' long terminal repeat. Although the term nef is the acronym of
negative factor, the proposed negative role of the nef gene has been
challenged by us and others. It was recently reported that in rhesus
monkeys, the nef gene of SIV is required for maintaining high virus
loads and also for development of AIDS. Almost all HIV-1 strains used
for studies on nef in the published works have been isolated in vitro by
propagating virus in peripheral blood mononuclear cells or human
CD4-positive cell lines. Therefore, these viruses may not contain the
nef gene actually present in vivo. As one approach to understand the
function of HIV-1 nef, we have been characterizing the nucleotide and
corresponding protein sequences of nef genes directly isolated from
infected individuals. The entire nef gene from 10 infected individuals
in Korea was amplified by polymerase chain reaction, cloned, and
sequenced. Our initial analysis showed that at the nucleotide level, the
intraindividual variation ranged from 0 to 3% in most cases, while the
interindividual variation was 2 to 20%. It appeared that the nef
sequences from several infected individuals were closely related. Our
results suggested that nucleotide sequences of nef from different
individuals were highly variable, enough to distinguish between strains.
We are currently studying implicaitons of these data for pathogenesis
and epidemiology of HIV in Korea.
DE Animal Base Sequence *Genes, nef Human HIV
Infections/EPIDEMIOLOGY/ETIOLOGY/*MICROBIOLOGY
HIV-1/*GENETICS/*ISOLATION & PURIF Korea/EPIDEMIOLOGY Macaca mulatta
Polymerase Chain Reaction Sequence Homology, Nucleic Acid Simian
Acquired Immunodeficiency Syndrome/MICROBIOLOGY SIV/GENETICS Variation
(Genetics) MEETING ABSTRACT
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).